I am currently developing an application that uses a modem (external serial modem) for dial-up connection (9600 baud rate) to an external service. I'm using the javax.comm package.

My question is: What is the best way to determine when there is no more data to read from the InputStream?

The sample code that I've seen has done something like this:

			

			int noReadCount = 0;
			

			while (true) {
			

			int numBytes = inputStream.read(readBuffer);
			

			if (numBytes == 0) {
			

			noReadCount++;
			

			} else {
			

			noReadCount = 0;
			

			}
			

			// if no bytes for 5 attempts then assume we've
			

			// received all data
			

			if (noReadCount > 4) {
			

			break;
			

			}
			

			// Sleep for a second before trying to read again
			

			try {
			

			Thread.sleep(1000);
			

			} catch (InterruptedException ie) {}
			

			}